Home / 687,875.64-949,255.06-381,936.21

Finding the Fourth Proportional to 687,875.64, 949,255.06 and 381,936.21

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Solution

The fourth proportional to 687,875.64, 949,255.06 and 381,936.21 is: 527,064.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,875.64 : 949,255.06 = 381,936.21 : x
  2. Step 2: Convert to fraction form
    687,875.64/949,255.06 = 381,936.21/x
  3. Step 3: Cross multiply
    687,875.64x = 949,255.06 × 381,936.21
  4. Step 4: Simplify right side
    687,875.64x = 362,554,879,939.72
  5. Step 5: Solve for x
    x = 362,554,879,939.72/687,875.64
  6. Step 6: Final answer
    x = 527,064.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.